The problem with either getting a group of friends together and kicking the shit out these cowards, or waiting till you see them alone and beating each of their asses is that whilst they think it's great fun to do it to other people, if it happens to them, all of a sudden it's a huge fucking injustice. These lowlife fucks will never see it as "i got you, you got me, now we're even", they'll always escalate things. You get two of your freinds to join you so that it's three on three, and you come out on top, next time it'll be six on one and you won't come out on top.

To everyone that's telling the OP to get them in trouble or jump them...bad idea.
One of two things will happen to him: a) he'll get shanked or b) he'll get pushed off a building. I've heard enough horror stories about people wanting to stand up to irrational fuckhead thugs to know that it never ends well....especially not over some god damn chicken wings and a cell phone. Oddly enough, most of these fuckheads wind up dead over bullshit like chicken wings and cell phones.

I need to get the fuck out of the Bronx.

I see what you're saying but what else can he do? If he doesn't do anything, they'll keep beating him up every time they see him. It's a very bad situation where somethings needs to be done. What do you recommend then?